38934639 has 6 divisors (see below), whose sum is σ = 56238936. Its totient is φ = 25956420.

The previous prime is 38934589. The next prime is 38934647. The reversal of 38934639 is 93643983.

38934639 is a `hidden beast` number, since 3 + 8 + 9 + 3 + 4 + 639 = 666.

It is not a de Polignac number, because 38934639 - 2¹⁵ = 38901871 is a prime.

It is a super-2 number, since 2×38934639² = 3031812228120642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38934594 and 38934603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38934139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2163027 + ... + 2163044.

It is an arithmetic number, because the mean of its divisors is an integer number (9373156).

Almost surely, 2^38934639 is an apocalyptic number.

38934639 is a deficient number, since it is larger than the sum of its proper divisors (17304297).

38934639 is a wasteful number, since it uses less digits than its factorization.

38934639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326077 (or 4326074 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 38934639 is about 6239.7627358739. The cubic root of 38934639 is about 338.9315913860.

The spelling of 38934639 in words is "thirty-eight million, nine hundred thirty-four thousand, six hundred thirty-nine".